Spindle of flaws - it sounds a little weird but in Russian, the word for spindle that's used in this song - 'веретеном' - essentially means something that keeps spinning so in Russian, that phrase basically means that he was wore out by the ever coming flaws/vices/wrongs

the new dawn will overpower sleep - it sounds a bit more epic in Russian. In Russian the word used implies that the dawn fought sleep and won so technically overpowered just with a more epic ring to it.